Recognition method for replacing head and beauty instrument

The invention discloses an identification method for a replacement head and a beauty instrument, and the method comprises the steps: receiving a first frequency signal transmitted by the replacement head, and recognizing the type of the currently used head according to the first frequency signal; receiving a second frequency signal sent by the replacement head, and identifying the current working state according to the second frequency signal; the working state comprises a working temperature, a working brightness or a working gear. The handheld body can recognize the type of the currently used head and the corresponding working state according to the first frequency signal and the second frequency signal sequentially sent by the replaceable head, the recognition method is simple and reliable, in addition, the replaceable head can be connected with the handheld body only through a small number of contact points, and the replacement head is convenient to use. And the handheld body can identify the currently us